US President Joe Biden with Vice President Kamala Harris (not shown), delivers remarks on Covid-19 response and vaccinations in the South Court Auditorium of the White House in Washington DC, on March 29, 2021. US President Joe Biden's administration on March 29, 2021 announced a set of new actions to ensure that 90 percent of adults will be eligible for vaccination against Covid by April 19.
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Biden: 90% of adults will be vaccine eligible by April 19
03:08 - Source: CNN
CNN  — 

All 50 states have announced when they plan to open up coronavirus vaccinations to everyone eligible under US Food and Drug Administration emergency use authorizations – if they haven’t done so already.

Registered Nurse Morgan James loads a syringe with a dose of the Pfizer Covid-19 vaccine at the Blood Bank of Alaska in Anchorage on March 19, 2021. - Alaska became the first state in the country last week to open vaccination access to everyone over the age of 16 and has fully vaccinated 16 percent of the state's population, the highest rate in the country. (Photo by Frederic J. BROWN / AFP) (Photo by FREDERIC J. BROWN/AFP via Getty Images)
Registered Nurse Morgan James loads a syringe with a dose of the Pfizer Covid-19 vaccine at the Blood Bank of Alaska in Anchorage on March 19, 2021. - Alaska became the first state in the country last week to open vaccination access to everyone over the age of 16 and has fully vaccinated 16 percent of the state's population, the highest rate in the country. (Photo by Frederic J. BROWN / AFP) (Photo by FREDERIC J. BROWN/AFP via Getty Images)
Frederic J. Brown/AFP/Getty Images

Related article As some states open Covid-19 vaccines to all, many others are still weeks away. Here's a timeline.

Arkansas is the latest state to announce plans to expand vaccine eligibility to anyone 16 and older, starting on Tuesday, Gov. Asa Hutchinson announced.

A dozen other states already also have expanded coronavirus vaccine eligibility to anyone 16 and older. And several states that previously announced plans to open up vaccine eligibility by early May have changed their timelines to open up in late March or early April.

Below is the timeline for when those and other states have said they will open vaccination eligibility to the general public:

– March 9: Alaska

– March 16: Mississippi

– March 22: West Virginia

– March 24: Utah and certain state-run sites in Arizona

– March 25: Georgia

– March 29: Oklahoma, Texas, Ohio, North Dakota, Louisiana and Kansas

– March 30: Minnesota, Arkansas

– March 31: Indiana, South Carolina

– April 1: Montana, Connecticut

– April 2: New Hampshire, Colorado

– April 5: Michigan, Tennessee, Idaho, Iowa, Florida, Nevada, Wisconsin, Alabama

– April 6: New York, Delaware, Maryland

– April 7: North Carolina, Maine

– April 9: Missouri

– April 12: Illinois, Kentucky

– April 15: California, Washington

– April 18: Virginia

– April 19: Vermont, Massachusetts, Rhode Island, Pennsylvania, Washington, D.C.

– April, no set date: New Mexico, Wyoming

– May 1: Oregon, South Dakota, Nebraska, Hawaii, New Jersey

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For all states currently vaccinating anyone 16 and older, people ages 16 or 17 can only receive a Pfizer/BioNTech vaccine, as it is the only option authorized for use in that population so far.

The vaccines made by Moderna and Johnson & Johnson are authorized for use in adults 18 and older.

CNN’s Ashley Ahn and Virginia Langmaid contributed to this report.